package com.webserver.http;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.util.HashMap;
import java.util.Map;

/**
 * 请求对象
 * 该类的每一个实例表示客户端发送过来的一个请求
 * 每个请求有三个本分构成:
 * 1:请求行
 * 2:消息头
 * 3:消息正文
 */
public class HttpServletRequest {
    private Socket socket;
    //请求行相关信息
    private String method;
    private String uri;
    private String protocol;
    private Map<String,String> headers = new HashMap<>();
    public HttpServletRequest(Socket socket) throws IOException {
        socket = this.socket;
        //1.解析请求行
        parseRequestLine();
        //2.解析消息头
        parseHeaders();
        //3.解析消息正文
        parseContent();

    }
    private void parseRequestLine() throws IOException {
        String line = readLine();
        System.out.println("请求行:"+line);


        String[] data = line.split("\\s");
        method = data[0];
        uri = data[1];
        protocol = data[2];
        System.out.println("method:"+method);
        System.out.println("uri:"+uri);
        System.out.println("protocol:"+protocol);
    }
    private void parseHeaders() throws IOException {
        while (true){
            String line = readLine();
            if (line.isEmpty()) {
                break;
            }
            String[]arr=line.split(":\\s");
            headers.put(arr[0],arr[1]);
            System.out.println("消息头:"+line);
        }
        System.out.println(headers);
    }
    private void parseContent(){}

    public String readLine() throws IOException {
        InputStream in = socket.getInputStream();
        StringBuilder builder = new StringBuilder();
        char cur = 'a';
        char pre = 'a';
        int d;
        while ((d = in.read()) != -1) {
            cur = (char) d;

            if (pre == 13 && cur == 10) {
                break;
            }
            builder.append(cur);
            pre = cur;
        }
        return builder.toString().trim();
    }

    public String getMethod() {
        return method;
    }

    public String getUri() {
        return uri;
    }

    public String getProtocol() {
        return protocol;
    }
    public String getHeader(String name){
        return headers.get(name);
    }
}


























